Calculating machine



Sept. 20, 1938. F. A. NlEMANN ET AL CALCULATING MACHINE Original Filed Nov. 5, 1934 4 Sheets-Sheet l lgvvgmoks BY M 7/. 4 p (7/ g A. 7 (ZMZM I GTJWRMY Sept. 20, 1938. F A. NIEMANN ET AL 2,130,364

CALCULATING MACHINE Original Filed Nov. 5, 1934- 4 Sheets-Sheet 2 INVENTORS.

A TTORNEY.

Sept. 20, 1938.

F. A NIEMANN ET AL 2,130,364

CALCULATING MACHINE 4 Sheets-Sheet 3 Original Filed Nov. 5, 1934 ATTORNEY.

INVENTORS. Wd a Sept. 20, 1938. F. A. NIEMANN ET AL CALCULATING MACHINE 4 Sheets-Sheet 4 I VENTORS.

a I/I Original Filed Nov. 5, 1934 Patented Sept. 20, 1938 UNITED STATES PATENT OFFICE CALCULATING MACHINE Illinois Application November 5, 1934, Serial No. 751,526 Renewed December 10, 1937 6 Claims.

This invention relates in general to calculating machines and has more particular reference to the provision of an improved registering mechanism adapted to supplement the ordinary registering mechanism employed in calculating machines generally.

A principal object of the invention is the provision of a registering mechanism supplemental to the ordinary registering mechanism of a calculating machine.

Another important object of the invention is the provision of novel means interposed between the supplemental and ordinary registering mechanism whereby the totals from the ordinary registering mechanism may be readily transferred to the supplementary registering mechanism.

Another important object of the invention is the provision of a calculating machine of the character described, having normally disconoperating said registers to transfer the totals of one register to the other, the said compensating means being normally disconnected from either of said registers.

Another important object of the invention is the provision of manually operable means to effect a transfer of totals from the ordinary registering mechanism to the supplemental registering mechanism.

30 Another important object of the invention is the provision of means for locking the total transfer lever during operation of the ordinary registering mechanism zeroizing lever.

Another important object of the invention is 35 the provision in a machine of the character described of means preventing operation of the ordinary zeroizing lever while transfer of totals to the supplemental registering mechanism is being efiected.

40 Another important'object of the invention is the provision of locking means for locking the ordinary actuating mechanism against operation during the transfer operation.

Another important object of the invention is 45 the provision of an error lock for preventing operation of the supplemental registering mechanism, in the event of partial depression of a numeral key.

Another important object of the invention is 50 the provision, in a machine of the character described, of locking features which eliminate the possibility of error in a transferring operation from the ordinary registering mechanism to the supplemental registering mechanism.

55 Numerous other objects and advantages of the nected registers and compensating means for' invention will be understood from the following description, which, when taken in connection with the accompanying drawings, discloses a preferred embodiment thereof.

On the drawings,

Figure 1 is a partial plan view of a calculating machine of the multiple-order key-driven type in which the present invention is embodied;

Fig. 2 is a partial vertical section taken at the left of the machine, showing details of the ordinary and supplemental registering mechanisms;

Fig. 3 is a partial top plan view showing certain details of the ordinary and supplemental registering mechanisms;

Fig. 4 is a partial sectional elevation of the machine with the left hand outer wall removed;

Fig. 5 is a detail view showing the supplemental register zeroizing mechanism;

Fig. 6 is a partial detail top plan view showing the compensating devices and connections and means for moving said devices into and out of engagement;

Fig. 7 is an enlarged section showing details of construction of the compensating device;

Fig. 8 is a partial sectional elevation of the machine with the right hand outer wall removed;

Fig. 9 is a full size sectional view showing details of the locking feature which insures halting of the control crank after a full rotation;

Fig. 10 is a full size section showing details of another locking feature; and

Fig. 11 is a similar view showing a further adaptation of the locking feature.

Referring to the drawings, the present embodiment of the invention is shown incorporated in a calculating machine of the multiple-order keydriven type, such as the well-known duplex comptometer, the general character of which is shown and described in United States Letters Patent to Door E. Felt, Nos. 762,520, 762,521, 960,- 528, 996,009, 1,003,723, and the patent to Kurt F. Ziehm No. 1,110,734. The invention is particularly adaptable for use in connection with the multiple-order key-driven type of calculating machine in which is embodied a zeroizing mechanism having the general characteristics disclosed in United States Letters Patent No. 1,357,748 to Joseph A. V. Turck.

The details of construction of this type of machine are fully described in these earlier patents and it is not believed necessary to here set forth other than a brief description of the general features of the machine and such parts as are directly concerned with the operation of the present invention for a complete understanding thereof.

The various instrumentalities of the calculating machine are supported by a frame mounted on a base [4 of the casing. The frame consists of side skeleton plates I5 and intermediate skeleton plates 16 disposed between the various actuating mechanisms of the several orders of the machine and all tied together at suitable points by transverse tie rods H. A number of columns of nine keys each are provided, each key being indicated by reference numeral i8, there being a column of nine keys for each numeral wheel 19 of the ordinary registering mechanism, together with the actuating mechanisms and attendant parts interposed between a column of keys and its corresponding numeral wheel. The registrations indicated by the several numeral wheels, which constitute the answer to a calculating operation performed by the machine, may be viewed through sight openings 2! in the cover plate of the casing above the respective numeral wheels.

Each column of keys forms a part of an actuating mechanism for transmitting to its numeral wheel an amount of travel varying with the particular key operated and the accumulator mechanism for each column of keys and its corresponding numeral wheel is actuated by a column actuator 22, in the form of a spring-returned segment lever, as shown in Figs. 2 and 8, adapted to be depressed an amount determined by the particular key l8 actuated by the operator.

Each key is provided with a stem 23 extending down and bearing upon a column actuator 22, and the key at the extreme front of the machine, being further from the pivotal axis of the column actuator than the key at the rear of the machine, moves the column actuator through a lesser arc than .does the key last mentioned. The keys of each column bear the numbers 1 to 9 in front-to-rear order, together with their nines complements, and the key at the extreme front is adapted to effect actuation of the column actuator through an are approximately one-ninth of that produced by the operation of the key at the extreme rear of the machine, and upon depression of intermediate keys the column actuator is moved through arcs proportionate with the value of the intermediate key depressed.

The column actuator 22 of each order or column of nine keys of the machine is adapted to impart calculating movement to an accumulator and for this purpose is provided at its forward end with a rack 24 which meshes with an accumulator pinion 25 journalled upon a transverse shaft 4 26 supported in suitable-bearings in the skeleton frame.

The pinion 25 of each order forms a part of an internal ratchet mechanism disclosed in the prior patents hereinabove mentioned and which be-- comes effective upon the upstroke of the column actuator to clutch the pinion 25 to a lantern wheel 21 and a transmitting pinion or gear 28 that rotates with the lantern wheel and is adapted to mesh with a gear 29 journalled on a shaft 3| parallel with the aforesaid shaft 26.

The gear 29 meshes with an intermediate gear 32 on a transverse shaft 33 and the latter in turn meshes with the numeral wheel pinion 34 journalled on a transverse shaft 35 and fixed to the numeral wheel 19 of the registering mechanism.

It will be understood that each time the column actuator is depressed the rachet mechanism moves idly and no motion is transmitted to the gear train beginning with the transmitting pinion 28 and ending with the numeral wheel pinion 34; however, upon the return or upward movement of the column actuator through its spring action, the transmitting pinion 28 is clutched to the accumulator pinion 25 and the gear train rotates the numeral wheel I9 through the are determined by the particular key depressed.

Carrying mechanism is provided in each order of accumulator mechanism for the purpose of actuating the accumulator of the next higher order of the machine each time a carry is to be transferred from a lower order. For the present purposes it will not be necessary to give a detailed explanation of the carrying mechanism, and a brief reference to parts of the carrying mechanism, together with a general statement of their function, will be sufficient because ample description of the same will be found in the prior patents hereinbefore mentioned.

The carrying mechanism in each order is of the standard duplex comptometer type having provision for permitting ordinal keys to be depressed simultaneously and column actuator impulses delivered, in two or more adjacent orders, and yet for preventing any carrying impulses released from a lower order from being delivered to the next higher order until the column actuator movement of such higher order is completed. This operation of effecting simultane ous key-driven actuation of a plurality of column actuators in adjacent orders, the strokes overlapping each other in any manner, is the action that has been referred to as duplexing".

In addition to its function as a member of the gear train for transmitting the motion of the column actuator to the numeral wheel IS, the gear 29 is a carrying motor winding gear and secured thereto is the usual carrying motor spring 35. The other end of this motor spring is secured to the usual carrying escapement 3'! that is adapted to be engaged by first one and then the other of the pair of release detents 38, 39, so that when said'escapcment is released by one of the detents, it can make only one-half of a full rotation before being checked by the engagement of the escapement with the other of said detents, each said half rotation of the escapement imparting a carrying throw to the bell crank carrying transfer lever 40 (not fully shown) and carrying transfer pawl 4i mounted on the said bell crank carrying transfer lover. The bell crank carrying lever is fully shown at 48 in Figs. 5 and 6 of Patent #1,35'7,748. The ratio of the gears and various parts is such that a complete rotation of the numeral wheel I9 is accompanied by a half rotation of the carrying motor winding gear 29, and at each such half rotation of said gear 29, an 180 throw of the carrying cam escapement member, effected by a release of one or the other of the pair of detents 38, 39 in the usual way, shifts the bell crank carrying lever sufiiciently to cause the carrying transfer pawl 4| to throw the lantern wheel ratchet of the next higher or left hand accumulator one numeral space, which movement of the lantern wheel is transmitted through the above mentioned train of gears ending with the numeral wheel pinion 34 to effect a carrying transfer from the accumulator mechanism of the lower order to the accumulator mechanism of the next higher order.

In order to prevent either cam on the carrying escapement from effecting a carrying throw of the cooperating bell crank carrying lever at a time when the accumulator of the higher order impelled by said carrying lever is already in motion or is about to be moved by the column actuator that has been or is being depressed by one of the keys in that higher order, there is provided a detaining latch tooth formed on the front end of a stop detent 42, in said higher order, which stop detent 42 is pivotally mounted on the carrying bell crank lever and is adapted to be actuated by a spring to shift such detaining latch tooth into restraining engagement with either one of two stops formed on the carrying cam escapement 3'I.

Normally the detaining latch tooth is held out of engagement with the stop of the carrying escapement 31 by the dolly roll on the column actuator'of said next higher order. On depression of such column actuator, however, the dolly-roll moves out of engagement with the stop detent 42, thereby permitting the spring to shift said stop detent 42 into such position that the detaining latch tooth formed at its opposite end is in engagement with the stop of the escapement member, and this relation of parts is maintained until the column actuator regains its normal elevated position. Hence, so long as a column actuator is in a position other than its normal elevated position, and notwithstanding a release of the escapement member by either one or the other of the releasing detents 38, 39, the carrying cam is prevented from making a carryingthrow to lift the carrying lever until the detaining latch tooth is again moved out of engagement with the stop of the escapement, by the return to normal of the column actuator of the next higher order, the order that is to receive the released carrying throw. It is thus provided that keys may be depressed simultaneously and column actuator impulses released from a lower one of said orders will not be actually delivered to the next higher of said orders until the column actuator movement of such higher order is completed. The operation of effecting simultaneous key-driven actuation of a plurality of column actuators in adjacent orders, the strokes overlapping each other in any manner, is the ac- .tion that has been hereinbefore referred to as duplexing.

Such is, in brief outline, the manner in which prime actuations and carrying impulses are imparted to the actuator mechanisms in the duplex comptometers of the aforementioned patents. It will be understood that these actuating mechanisms are associated with various stop mechanisms set forth in these early patents, to limit the movements imparted to the actuator mechanisms by the prime actuations and carrying impulses. All of these mechanisms are shifted -variously into and out of their various stop positions to impose additional restriction to the movements of the carrying devices and to the prime actuations of the accumulators.

The zeroizing mechanism illustrated on the drawings is, broadly stated, of the type disclosed in United States Letters Patent No. 1,357,748 wherein the zeroizing operation, i. e. the return of the numeral or register wheel I9 and associated parts to zero position, is accomplished by disconnecting the connections between the numeral wheels and the actuating devices so that while retaining the various stop devices in their normal relations to the accumulator mechanisms the stored power in the carrying springs may give to the numeral or register wheels backward rotations so as to move them rearwardly from the divers positions they may occupy and to pivoted at 49 on the fixed frame.

stop them when they individually arrive at zero position.

zeroizing is effected by detraining or disengaging the carrying spring winding gears 29 from the transmitting pinions 23. The shaft 26 of the transmitting pinions 28, as well as the shafts 35 and 33 of the numeral wheels l9 and the intermediate gears 32, are mounted in bearings fixed in the frame of the machine. In order to effect detraining or disengagement of the gears 29 from the transmitting pinions 28, the shaft 3| of said gears 29 is'carried by a swinging frame that is adapted to have a restricted outward pivotal movement on an axis coincident with the shaft 33. This swinging frame in general comprises partition plates 43 connected together at suitable points by transverse tie rods 44 to form a unitary structure and is under the control of the zeroizing lever 45 shown in Fig. 8.

A short transverse shaft 46 is journalled in a bearing in the right hand side plate I5 of the fixed frame and this shaft projects through the outer casing and carries at its outer end the zeroizing handle or lever 45. A segment 50 is fixed upon the inner end of said transverse shaft 46 and pivoted to said segment is a link 41 which in turn is pivoted to a depending lever 48 that is The lower end of said lever arm 43 is pivotally connected by means of a short link 5| with an arm 52 rotatably mounted with respect to a transverse shaft 53 that is journalled in the fixed frame. The arm 52 is provided with an engaging face 54 adapted to contact with a rocker arm 55 fast on the shaft 53. When the parts are in the relative position indicated in Fig. 8, a short pivotal movement of the zeroizing lever 45 toward the left will, through the segment 50, the link 41, lever arm 48, short link 5|, arm 52 and rocker arm 55, impart a short rocking movement to the shaft 53 in a counter-clockwise direction.

Fixed on the shaft 53 and rotatable therewith are other rocker arms 56, shown in Figs. 2 and 4. These rocker arms 56 are pivotally connected with curved links 51 having slotted shifting pivots upon a transverse shaft 58. The forward end of each of said curved links 51 is provided with a pin 59 positioned within the spaced jaws 6| of the inner member of a toggle 62. The toggle member 62 is pivoted between its ends on a shaft 63 carried by the swinging frame and the outer end of each toggle member 62 is pivotally connected by a shaft 64 with the other member 65 of the toggle. The several toggle members 65 are pivoted on studs 66 mounted on the fixed frame and these toggle members 65 are respectively provided with depending arms 61 having stop projections 68 adapted to engage the toggle members 62 and to limit their movement upon rocking the shaft 63 in a counter-clockwise direction.

Upon operation of the zeroizing lever 45 to effect canceling, i. e. toward the left viewing Fig. 8, the link and lever connection imparts a counter-clockwise rotation to the shaft 53 which, through the above described toggles and other parts, is accompanied by an outward swinging of the swinging frame and a resultant detraining of the winding gears 29 from the gears 28. Detraining the gears 29 from the gears 28 leaves the carrying gear springs 36 free to unwind and such unwinding occurs until the numeral wheels I9 arrive at zero. The unwinding action of the springs is terminated by stops which are projected by the toggles into the path of lugs riveted to the gears 29, all as fully set forth in Patent No. 1,357,748. The swinging frame is retained in its outward position after a zeroizing operation has been effected, and the gears 29 are maintained in disengagement with respect to gears 28 until the operation of one of the keys 8, as described in the aforesaid patent.

The present invention is more particularly concerned with the provision of a registering mechanism supplemental to the ordinary registering mechanism that is adapted to be operated in connection with the ordinary registering mechanism hereinabove described, whereby a set of figures indicated on the numeral wheels l9 may be quickly and efliciently transferred to the numeral wheels of the supplemental registering mechanism and the total indicated on the numeral wheels thus preserved. Improved carrying mechanism is provided in the supplemental registering mechanism, so that it has a capacity for successive registrations, with the result that several totals in successive or other order may be transferred from the ordinary numeral wheels to the numeral wheels of the supplemental reg istering mechanism and a grand total of the individual totals so transferred indicated on the numeral wheels of the supplemental registering mechanism. The supplemental registering mechanism is thus not only useful for preserving totals of individual calculating operations performed on the machine but also for giving the grand total of such individual totals as may be transferred from the ordinary registering mechanism to the supplemental registering mechanism.

On the right hand side of the casing (viewing Fig. l) is an operating handle or crank 69 which actuates a control shaft 1| supported by and extending transversely through the frame of the machine and adapted to be rotated in a clockwise direction (viewing Fig. 8). Upon rotation of the handle 69, a heart-shaped cam 12, fixed on the shaft 1|, is rotated, camming to the right (Fig. 2) a roller 13 on a vertical arm 74 which is pivoted at its upper end on a shaft 15. At its lower end the vertical arm 14 is provided with a stud 16 in engagement with a slot in a horizontal lever 11 extending rearwardly and pivoted at 19 to the rocker arm 56 fixed to the transverse shaft 53 earlier described.

Upon clockwise rotation of the handle 69 and shaft 1 I, the heart-shaped cam 12 cams the roller 13 forwardly, thereby swinging the lever TI to the right and rocking the shaft 53 of the swinging frame to move the swinging frame forwardly for a purpose to be later described.

Mounted in the side plates 43 of the swinging frame is a transverse shaft 78 which carries a set of transfer pinions 19 in mesh with the carrying winding gears 29. The pinions 19 are for the purpose of transferring the totals of numeral wheels I9 through intermediate gears 32 and carrying winding gears 29, when the latter are being turned rearwardly to the zero position in the zeroizing action, to the gearing of the supplemental registering mechanism in a manner as will be fully set forth hereinafter. The unwinding of the carrying gear spring 36 in the zeroizing operation earlier described does not furnish the power needed to transfer the ordinary totals into the supplemental registering mechanism and means are provided to furnish the necessary power to effect the transfer.

Supported by the partition plates 8| of the supplemental registering mechanism frame is a transverse shaft 82 provided with ball ends (Fig. 6), parallel to and in a plane slightly above the shaft 78 of the ordinary swinging frame, and journalled on this shaft are compensating devices, generally indicated at 83, with which the pinions 19 are adapted to engage upon the forward movement of the swinging frame.

These compensating devices 83 are interposed between-the ordinary and supplemental mechanism to supply power in addition to the power of the carrying springs 36 to positively zeroize the ordinary numeral wheels l9 and transfer the totals indicated on the ordinary numeral wheels to the supplemental registering mechanism. As shown in detail in Fig. 7, each compensating device 83 comprises a hub portion 84 and a gear portion 84a, the hub portion being threaded adjacent one end and provided with a keyway 89 to receive a tongued washer 86. Graphite washers 85 are positioned on either side of gear portion 84:; and a spring washer 81 is interposed between the tongued washer 86 and an ordinary washer 88. Threaded on the hub is a spring nut 89 and a lock nut 9|. A dowel pin 92 is driven into the shaft 82 and is maintained in position by the flange portion 90 of lock nut 9|.

The spring nut 89 is provided with notches adapted to receive a spanner wrench in adjusting the amount of friction necessary for the gear. The lock nut 9| is also provided with notches to receive a spanner wrench for locking the spring nut 89 in position. The compensating devices 83 are normally out of mesh with the supplemental mechanism transmitting pinions 93 journalled on a transverse shaft 94 supported by the partition plates 8|, but upon initial rotation of the handle 89 the transverse shaft 82 and the compensating devices are moved axially to the left (viewing Fig. 1) by means of the cam face of the ratchet cam 95, camming the bailed end of the shaft 82 axially to the left and moving the compensating devices into engagement with the transmitting pinions 93. Upon initial movement of the handle or crank 69, the compensating devices are moved into engagement with the transmitting pinions 93 and upon further rotation of the crank 69 the swinging frame of the ordinary mechanism is rocked forward, as already described, moving the pinions 19 into engagement with the gear portion 8411., thereby completely entraining the ordinary and supplemental mechanisms. Upon further rotation of the crank 69 the teeth of an intermittent gear 96 (Fig. 8), journalled on the shaft ll, mesh with an intermittent pinion 91 fixed on the shaft 82 rotating the shaft 82 one complete revolution and ro tating the gear portion 84a an amount controlled by the carrying gears 29 equal to the amount registered on the numeral wheels 9.

The construction of the parts is such that one complete revolution of shaft 82 and compensating device 83 will transfer 9 from the ordinary numeral wheel l9 to the supplemental accumulator wheel |03. It will be apparent that if the total to be transferred is less than 9 on any individual wheel I 9, the gear portion 8411 will be halted in its movement by the halting of carrying gear 29, as described in Patent No. 1,357,748, and continued rotation of shaft 82 is permitted by the construction of the compensating device as already described.

A bar 83a notched as indicated at 8317 (Fig. 3). extending transversely across the several orders of the supplemental mechanism and secured to the outer partition plates 8| is provided to insure proper engagement of gear 84a with transfer pin ion 19 and transmitting pinion 93.

Regardless of the power stored in carrying gear springs 36, which is normally used to return the numeral wheels I9 to zero, rotation of compensating device 83 through transfer pinion 19 and the train of gearing heretofore described drives the numeral wheel I9 to zero.

Simultaneously with zeroizing the ordinary numeral wheels, the compensating devices impart motion to transmitting pinion 93 and thence to lantern wheel I I6 of the supplemental accumulator mechanism and a transmitting pinion or gear 98 which rotates with the lantern wheel and is adapted to mesh with a carrying gear 99 Journalled on a shaft I00, thereby winding carrying gear spring 99a in the known manner.

The gear 99 meshes with an intermediate gear IOI on a transverse shaft IOIa and the latter in turn meshes with the numeral wheel pinion I02 journalled on a transverse shaft I02a and fixed to the numeral wheel I03 of the supplemental registering mechanism. The numeral wheels I03 are provided with a set of figures or other indicia corresponding to the ordinary numeral wheels I9 and adapted to be viewed through a set of sight openings I030. formed in the cover plate of the casing above the respective numeral wheels of the supplemental registering mechanism.

Carrying mechanism is provided in each supplemental accumulator mechanism for the purpose of actuating the accumulator of the next higher order each time a carry is to be transferred from a lower order but as the mechanism employed is identical to that of the ordinary ac cumulator mechanism, further description is not thought necessary.

Counter-clockwise movement of the handle or.

crank 69 (Fig. 8) is prevented by means of a pawl I04 which idles over the teeth I05 of the ratchet cam 95 upon clockwise rotation of the handle 69. The pawl I04 is provided with a hub pivoted on the shaft I00 and is normally held in engagement with the teeth I05 of the ratchet cam by means of a spring I01.

Means are provided to disengage the compensating devices 83 from the transmitting pinions 83 after transfer of totals from the ordinary registering mechanism to the supplemental registering mechanism has been completed. Journalled on the shaft II at the left hand side of the machine is a cam I08 (Figs. 6 and 4) slotted for a purpose to be later described, which cam co-acts with ratchet cam 95 and is adapted to engage the ball end of the shaft 82 urging the latter to the right after the function abovementioned has been accomplished.

' The invention further provides means for releasing the carrying mechanism embodied in the supplemental registering mechanism in order to permit the transfer of a plurality of totals from the ordinary registering mechanism to the supplemental registering mechanism and the indication of a correct grand total on the supplemental accumulator mechanism. The releasing means provided in accordance with the invention is detained in its operation during the step of transferring the totals from the ordinary registering wheels to the'supplemental accumulator registering wheels I03, i. e. while the compensating devices are engaged with the supplemental accumulator transmitting pinions 93.

Viewing Fig. 2 it will be noted that attached to and adjacent the ends of control shaft II by pins threaded through their hubs are cams I09 adapted, near the end of a complete revolution of the control shaft, to contact rollers III suitably secured to levers II2, two of which are provided, adjacent the fixed frames on either side of the supplemental accumulator mechanism. The levers II2 are pivoted at their upper ends upon the shaft I5 and are slotted to permit vertical movement. The lower ends of levers II2,are bifurcated and the jaws II2a embrace control shaft II.

The lever H2 is provided with a depending arm II3 through which a shaft II4, extending.

across the machine, passes. A spring H5 attached to arm II3 normally restrains lever H2 and shaft I I4 from upward movement. Near the completion of one full revolution of the control shaft the cams I09 engage the rollers III, camming the levers I I2 upwardly against the tension of spring H5 and raising the shaft II4, thereby elevating the stop detent II! of the carrying bell crank lever 40 into engagement with the pins of lantern wheel II6. As the stop detent H1 is lifted, a detaining latch tooth, formed on its opposite end, is lowered releasing the escapement II9, allowing it to bear against a roller (roller 41 shown in Fig. 5 of Patent No. mounted on the carrying lever urging it rearwardly, and through its pawl IZI moving the lantern wheel II6 one-tenth of a full rotation or enough to impart through the train of gears sufficient movement to turn the numeral wheel and complete the carry of one from a lower to a higher order.

As earlier described, means are provided for preventing counter-clockwise movement of the handle or crank 69. In addition, means are provided for halting the handle 69 after one full revolution of control shaft "II, and looking it against further clockwise movement until redepression of anumeral key I8. A lower detent shaft I22, journalled in the swinging frame plates 43 is adapted upon forward movement of the swinging frame to engage a stop I23 mounted on shaft I24, moving the stop I23 into the path of a stud I secured to the intermittent gear 96. Upon a full rotation of the crank 69 the stud I25 engages the stop I23 restraining the crank from further movement until operation of one of the keys I8, which, through various mechanisms described in the earlier mentioned patents, swings the rack frame and shaft I22 rearwardly permitting the stop I23 to return to its normal position out of the path of travel of stud I25 under the tension of a spring I26 attached to a depending arm I21 of the stop I23. At its opposite end the spring is attached to a stud I28 in the frame. As the stop is moved out of the path of the stud I25 the arm I21 engages a shaft I29 limiting further movement of the stop.

Zeroizing mechanism is provided for returning the numeral wheels I03 of the supplemental registering mechanism to zero positions. Located on the left hand side of the machine is the supplemental accumulator zero crank I30 (Fig. 4) extending through the outer casing and the fixed frame into the crank main piece I3I where it is held in place by a tapered screw I58 (Fig. 3). On the upper end of the crank main piece I3I are provided a plurality of teeth I32 adapted to ride over a pawl I83, on its down stroke and upstroke, preventing reversal of the zero crank before a full stroke has been obtained in either direction. Arms I34 (Fig. 5) on either side of the teeth I32 limit the movement of the zero crank by engaging a stud I35 fixed to the frame.

Adjacent the zero crank main piece I3I is a vertical lever I36 slotted at its upper end which is adapted to be lowered and raised by means of the cam face of the crank main piece I3I bearing against a roll l3I secured to the lever I36. At its lower extremity the lever I36 is fastened to a stud in the arm I38 of the supplemental accumulator actuating shaft I39 of the supplemental accumulator swinging frame. Upon actuation of the cam crank I30 in a zeroizing operation the cam face of the zero crank main piece I3I bears against the roll I3'I of the vertical slotted lever I38 urging the lever down ward and oscillating the actuating shaft of the supplemental accumulator, thereby detraining the gears and allowing the numeral wheels to return to zero in the manner described in connection with the ordinary registering mechamsm.

An arm I of slotted lever I38 is adapted upon the lowering of the lever I 36 to enter the slot I42 in the cam I08 thereby preventing any movement of the control shaft handle 69 until the zero crank has returned to its normal position after the zeroizing operation.

Likewise, upon rotation of the handle 69, any movement of the zero crank is prevented because the slot I42 in the cam I08 has been moved with the shaft 'II and upon attempting to operate the zero crank I30 the arm i4! strikes the outer edge of the cam I08 and is thereby restrained from further movement.

In accordance with the present invention, provision is made for looking all ordinal series of keys upon initial movement of the crank handle 69 in transferring totals from the ordinary registering mechanism to the supplemental registering mechanism.

A lever I 43 located at the lower right hand of the machine is provided with a hub pivoted on the shaft I24 and has an upwardly extending arm I44. At its forward end the lever I43 has an arm I45 adapted to rest against a cam face I46 of the intermittent gear 96, as shown in Fig. 8. A stud I41 secured to lever I43 engages the bifurcated end of a link I48 pivoted on a shaft I49. An upwardly extending arm I5I of link I48 pivoted on a shaft I49 normally engages a bent over portion or hook I50 formed on a vertical arm I40 of transverse bar I52 extending across the several orders of the machine, said bar I52 being pivoted on the shaft I49.

Lock arms I53 which are secured to bar I52 are pivoted on shaft I49, one look arm being provided for each order of keys. Upon initial operation of the crank 69 and rotation of the gear 98, the cam I45 of lever I43 will be cammed downwardly, as shown in Fig. 10, raising the link I 48 and rocking it rearwardly on its pivot I49, allowing the transverse bar I52 to rock forwardly through the tension of spring I5'I, one end of which is attached at I54 to the link I48. This action rocks the lock arms I53 in each column rearwardly into the path of travel of the column actuators 22 and restrains any movement of the said column actuators through operation of the keys I8. As earlier described, upon full rotation of the crank 69, it is halted in its travel by the stop I23 at which time it again presents the cam face I48 to the arm I45 of the lever I43 lowering the rear arm of the lever and rocking the link I48 forwardly, oscillating the transverse bar I52 and rocking the lock arms out of the path of travel of the column actuators 22.

The locking mechanism for preventing depression of a numeral key while transfer of totals from the ordinary numeral wheels to the supplemental accumulator numeral wheels is being effected, also functions to allow only a limited movement of the ordinary zero crank 45 during rotation of the crank 69 thereby preventing any chance of error through zeroizing of the numeral wheels in the ordinary registering mechanism while transferring the totals to the supplemental registering mechanism. The operation of zeroizing with the attendant forward rocking of the shaft 53 has been described. If a zeroizing operation is attempted the arm 52 attached to the shaft 53 will be rocked forward until it comes in contact with the shoulder I55 of arm I5I where it is restrained from further movement as shown in dotted lines in Fig. 10.

Means are provided for locking crank handle 69 and the supplemental registering mechanism in the event of a transfer being attempted while an error because of a partial key stroke is left in the ordinary mechanism. As has been fully described in the patents hereinbefore mentioned, when a partial key stroke has occurred, the column actuators 22 are held in a depressed condition until the key stroke has been completed or given its full depression. If an attempt is made to transfer the totals in the ordinary registering mechanism to the supplemental registering mechanism by rotation of the crank 69, it will be found that the crank is looked after an initial movement if an error has been made in the ordinary registering mechanism. As earlier described, upon movement of the crank 69, link I48 is raised and rocked rearwardly through its connection with the lever I43 with a coincident rearward rocking of the lock arms I53. If a column actuator 22 is depressed the lock arms I53 will bear against the column actuators 22 which are in its path thereby preventing further movement of the lock arm and permitting only a varied limited movement to the transverse bar I52 as shown in Fig. 11. The arm I44 of the lever I43, upon being raised upon the initial stroke of the crank 89, engages hook I50 on the arm I40 of transverse bar I52 and is restrained from further movement. Upon completing the key stroke the column actuator is fully depressed and then is allowed to rise to its normal position, leaving open the path of the lock arms I53 so that the crank 89 may be rotated.

It is thought that the invention and many of its attendant advantages will be understood from the foregoing description, and it will be apparent that various changes may be made in the form, construction and arrangement of the parts without departing from the spirit and scope of the invention or sacrificing all of its material advantages, the form hereinbefore described being merely a preferred embodiment thereof.

We claim:

1. In a calculating machine having an ordinary accumulator including zeroizing mechanism operatively associated therewith, and a supplemental accumulator; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising a driven member associated with each of the several denominational orders of said accumulators, said driven members being normally disconnected from both of said accumulators, means for connecting said driven members with said supplemental accumulator, means for connecting said ordinary accumulator with said driven members, means for sequentially rendering said last two means operative to connect said accumulators for transferring action, and a driving 75 member associated with each of said driven members including a friction device interposed between each of said associated members to compensate for the variable digital degrees of actuation transmitted to the several denominational orders of said supplemental accumulator during a transfer operation.

2. In a calculating machine having an ordinary accumulator including a zeroizing mechanism operatively associated therewith, and a supplemental accumulator; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising a driven member associated with each of the several denominational orders of said accumulators, said driven members being normally disconnected from both of said accumulators, means for connecting said driven members with said supplemental accumulator, means for connectlng said ordinary accumulator with said driven members, means for sequentially .rendering said last two means operative to connect said accumulators for transferring action, and driving means associated with each of said driven members including meansfor imparting an invariable increment of action and a friction device interposed between said last means and each of said driven members to compensate for the difference between the variable digital degrees of actuation imparted to said supplemental accumulator and said invariable increment of action during a transfer operation.

3. In a calculating machine having an ordinary accumulator, including denominational numeral wheels, gears connected therewith, and zeroizing mechanism operatively associated therewith, and a supplemental accumulator, including denominational numeral wheels and driving gears therefor; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising intermediate gears normally disconnected from the gears of both of said accumulators, means for moving said intermediate gears into mesh with the gears of said supplemental accumulator, means for moving the gears of said ordinary accumulator into mesh with said intermediate gears, means for sequentially rendering said two means operative, and means for driving said intermediate gears including means adapted to impart an invariable increment of action and means interposed between said last means and said intermediate gears for compensating for the variable digital degrees of actuation imparted to the several denominational numeral wheels of said supplemental accumulator during a transfer operation.

4. In a calculating machine having an ordinary accumulator, including denominational numeral wheels, gears connected therewith and zeroizing mechanism operatively associated therewith, and a supplemental accumulator, including denominational numeral wheels and driving gears therefor; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising intermediate gears normally disconnected from the gears of grees of actuation imparted to the several de- 1 nominational numeral wheels of said supplemental accumulator during a transfer operation.

5. In a calculating machine having an ordinary accumulator, including denominational numeral wheels, gears connected therewith, and zeroizing mechanism operatively associated therewith, and a supplemental accumulator, including denominational numeral wheels and driving gears therefor; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising intermediate gears normally disconnected from the gears of both of said accumulators, means for moving said intermediate gears into mesh with the gears of said supplemental accumulator, means for moving the gears of said ordinary accumulator into mesh with said intermediate gears, means for sequentially rendering said two means operative, and driving means including means adapted to impart an invariable increment of action and friction devices interposed between said last means and said intermediate gears to compensate for the difference between said invariable increment of action and the variable digital degrees of actuation imparted to the several denominational numeral wheels of said supplemental accumulator during a transfer operation.

6. In a calculating machine having an ordinary accumulator, including denominational numeral wheels and gears connected therewith, denominational actuating mechanism for said accumulator, zeroizing mechanism adapted to disconnect said gears from said actuating mechanism to set said numeral wheels to zero, and a supplemental accumulator, including denominational numeral wheels and driving gears therefor; means for transferring amounts registered by said ordinary accumulator to said supplemental accumulator, comprising intermediate gears normally disconnected from the gears of both of said accumulators, means for driving said intermediate gears including driving members and friction devices interposed between said driving members and said intermediate gears, means for moving said intermediate gears into mesh with the gears of said supplemental accumulator, means for disconnecting the gears of said ordinary accumulator from said actuating mechanism and moving the same into mesh with said intermediate gears to render said zeroizing mechanism effective, means for actuating said driving means and means for sequentially rendering said last three means operative.

FREDERICK A. NIEMANN. JOSEPH A. V. TURCK. 

